<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
	</head>
	<body data-foo = "hongwei">
		<script>
			alert($('body').data());
		</script>
	</body>
</html>
